Vehicle cooling structure

Abstract

A battery provided in a vehicle and configured to supply electric power is cooled down by coolant the heat of which is exchanged with the heat of external air by a radiator. The radiator is provided near the battery and performs heat-exchange between the coolant and the external air taken in through introduction holes provided on a bottom face of the vehicle. Thus, even in a case where the radiator is provided in a vehicle floor portion so that the battery is upsized, it is possible to restrain a coolant pipe from being elongated. This accordingly makes it possible to improve mountability to the vehicle.

What is claimed is: 
     
       1. A vehicle cooling structure comprising:
 a power supply portion provided in a vehicle and configured to supply electric power; and 
 a heat exchanger provided near the power supply portion and including a heat-exchanging portion formed into a wall shape, the heat-exchanging portion being configured to perform heat-exchange between coolant for cooling down the power supply portion and external air taken in through introduction holes provided on a bottom face of the vehicle, wherein 
 the heat-exchanging portion is placed along a horizontal direction in the heat exchanger, and 
 the heat exchanger includes:
 an inclined portion configured to incline the heat exchanger around an axial direction of the heat exchanger, the axial direction being along a vehicle width direction, and 
 an inclination controlling portion configured to control the inclined portion such that the heat exchanger is inclined downward in a vehicle up-down direction toward a rear side in a vehicle front-rear direction under a predetermined condition. 
 
 
     
     
       2. The vehicle cooling structure according to  claim 1 , wherein:
 the power supply portion supplies electric power to an electric machine provided in the vehicle and configured to drive the vehicle; and 
 the heat exchanger performs heat-exchange between the external air and the coolant that cools down the electric machine as well as the power supply portion. 
 
     
     
       3. The vehicle cooling structure according to  claim 1 , wherein the power supply portion and the heat exchanger are placed inwardly in a vehicle width direction from a pair of right and left frame members constituting a framework of the vehicle and extending in a vehicle front-rear direction. 
     
     
       4. The vehicle cooling structure according to  claim 1 , wherein the heat exchanger is integral with the power supply portion. 
     
     
       5. The vehicle cooling structure according to  claim 1 , wherein:
 the inclination controlling portion detects a traveling direction of the vehicle; and 
 the inclination controlling portion controls the inclined portion such that the heat exchanger is inclined downward in the vehicle up-down direction toward a rear side in the traveling direction thus detected.